In industrial production processes, pressure measurement is very common, and the types and working principles of pressure transmitters are also different. Choose to use different pressure transmitters under different working conditions. Today we will learn about the relevant characteristics of diffused silicon pressure transmitters.
Characteristics of diffused silicon pressure transmitters:
Firstly, suitable for small-scale operating conditions
The silicon chip in the diffusion silicon pressure transmitter has no dead zone in the low range range near zero due to the piezoresistive effect of the force sensitive resistor. The range for making a pressure transmitter can be as small as a few Kpa.
Secondly, high sensitivity
The sensitivity factor of silicon strain resistance is 50-100 times higher than that of metal strain gauges, so the corresponding sensitivity of the transmitter is very high, with a general range output of around 100mV. There are no special requirements for the interface circuit, making it convenient to use.
Thirdly, high precision
The sensing, sensitive conversion, and detection parts of the transmitter are implemented by the same component, without any intermediate conversion links, resulting in small repeatability and hysteresis errors. Due to the high stiffness and minimal deformation of monocrystalline silicon, good linearity is ensured.
Fourth: Long working life
Due to the low working elastic deformation to the order of microstrain, the maximum displacement of the elastic chip is in the sub micron order, resulting in low wear, no fatigue, and a lifespan of up to 1 × 103 pressure cycles, stable performance, and high reliability.
Fifth: Strong anti-corrosion ability
Due to the excellent chemical corrosion resistance of silicon, even non isolated diffusion silicon pressure sensors have a considerable ability to adapt to various media.
Sixth: Small size and light weight
The chip of the diffused silicon pressure transmitter adopts integrated technology and has no transmission components, so it is small in size and light in weight.
Diffusion silicon pressure transmitter is a typical type of pressure transmitter that can measure the gauge pressure, negative pressure, or absolute pressure of various liquids and gases. Diffusion silicon pressure transmitters are widely used in industrial fields such as petroleum, chemical, steel, power, light industry, and environmental protection.
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